Research On The Application Of Primitive Instruction Behavior Chain In A Chemistry Classroom Of Senior One Based On Triple Characterization

As an important form of analytical chemistry teaching,primitive chemistry instruction teaching behavior chain plays a guiding role in the structure.Triple representation refers to macroscopic representation,microscopic representation,symbolic representation.And the cultivation of students’ thinking mode of three representations of "macroscopic-microscopic-symbol" plays a driving role in improving the quality of chemistry.In the study of classroom teaching behavior,the educators found that the students in the first grade have difficulties in learning the triple representtation of chemistry,which makes it difficult to understand and explain the macroscopic phenomena from the microscopic and symbolic levels.The purpose of this study is to explore the application effect of primitive chemistry instruction teaching behavior chain which based on threefold representations in chemistry teaching in senior high school.In this study,macroscopic,microscopic and symbolic representations are taken as the main objects,classroom teaching behavior chain is taken as the carrier,and CPUP model is used to divide elementary teaching behavior chain.First of all,three types of classroom teaching cases of chemical skills,conceptual principles,and element compounds in《Chemistry 1》of PEP version were studied,including the recording and transcription of cases,coding of teaching behavior chain,and comparative analysis of cases with different teaching contents.Then,based on the analysis results,the elementary teaching behavior chains of class were designed and implemented,the test results and the learning situation of threefold representations between experimental class and control class were analyzed,and the effectiveness of threefold representations in the chemistry teaching of senior high school was discussed.The research results show that for different types of teaching content,the accurate analysis of the triple representation of chain in the classroom,and the teaching behavior of the relationship between frequency and time scale,and the design of threefold representations with reasonable numbers and transformations can help teachers to primitive system of teaching plan,improve the students’ participation in the classroom teaching activities,help students better understand and grasp the chemical science know-ledge,improve logical thinking ability.It is also conducive to improving the teaching effect of chemistry class,improving the effectiveness of classroom teaching and promoting the professional development of teachers.